Effects of spray adjuvants and operation modes on droplet deposition and elm aphid control using an unmanned aerial vehicle

IF 2.2 2区 农林科学 Q2 AGRICULTURAL ENGINEERING International Journal of Agricultural and Biological Engineering Pub Date : 2023-01-01 DOI:10.25165/j.ijabe.20231602.7424
Zechen Dou, Zhihao Fang, Xiaoqiang Han, Muhammad Zeeshan, Yapeng Liu, Y. Lan
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Abstract

: A conventional spraying mode and a fully autonomous fruit tree operation mode using a model DJ T30 unmanned aerial vehicle (UAV) were used to control aphids control on elm trees and to clarify the distribution of droplets in elm trees sprayed by a UAV. The effects of six aviation spray adjuvants on elm canopy droplet deposition and aphid control were evaluated. ImageJ software was used to analyze and measure the droplet density and deposition of water sensitive paper in two modes; this was done to calculate the droplet uniformity, depositional penetration, and droplet penetration, and to verify the aphid control effect. The results showed that the droplet density increased by 79.7%-100.7% in the upper canopy and 0-394.1% in the lower canopy without adjuvants in the fully autonomous fruit tree operation mode. The upper canopy deposits increased by 65.7%-179.3%, and the lower canopy increased by 0-152.8%. When adjuvants were added, the droplet density in the upper canopy increased by 49.7-56.1% using Jiexiaofeng (JXF), and the lower canopy increased by 138.2%-177.8% using JXF, 45.8%-141.3% using Beidatong (BDT), 45.5%-92.9% using Gongbei (GB), 0-93.5% using Maisi (MS), and 0-95.2% using Manniu (MN). The deposits of the upper canopy increased by 888.1-1 154.2% using JXF, 0-1 298.3% using MN, 0-343.9% using BDT, 0-422.5% using GB, 0-580.3% using MS. The lower canopy increased by 746.4%-1 426.0% using JXF, 226.2%- 231.0% using BDT, 435.8%-644.0% using GB, 255.0%-322.4% using MS, and 249.3%-360.0% using MN. When JXF was added, the droplet uniformity, droplet penetration and depositional penetration were better than when using other adjuvants. The effects of JXF, BDT and GB in controlling aphids was significantly better than other adjuvants ( p <0.05). The following control effects were observed; 94.1% with JXF, 93.1% with BDT, and 93.3% with GB after 3 d of application, and 97.9% with JXF, 95.6% with BDT, and 97.1% with GB after 7 d of application. At the same time, the application of the fully autonomous fruit tree operation mode and JXF can effectively improve the density and deposits, which will produce a superposition optimization effect. Our study focuses on the prevention and control of elm aphid infestations based on the operation mode of a UAV and aviation spray adjuvants, which can provide a baseline for the control of diseases and insect pests using UAVs in agriculture and forestry.
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喷雾佐剂和操作方式对无人机飞沫沉积和榆树蚜虫防治的影响
:采用常规喷洒模式和DJ T30型无人机全自动果树操作模式对榆树蚜虫进行控制,并对无人机喷洒的榆树飞沫分布情况进行研究。评价了6种航空喷雾佐剂对榆树树冠雾滴沉积和蚜虫防治的效果。采用ImageJ软件分析和测量两种模式下水敏纸的液滴密度和沉积情况;为了计算雾滴均匀性、沉积穿透性和雾滴穿透性,验证雾滴防治蚜虫的效果。结果表明,在无佐剂的完全自主果树运行模式下,上冠层雾滴密度提高79.7% ~ 100.7%,下冠层雾滴密度提高0 ~ 394.1%。上层冠层沉积物增加65.7% ~ 179.3%,下层冠层沉积物增加0 ~ 152.8%。添加佐剂后,洁小凤(JXF)的上冠层雾滴密度增加49.7% ~ 56.1%,洁小凤(JXF)的下冠层雾滴密度增加138.2% ~ 177.8%,北大通(BDT)雾滴密度增加45.8% ~ 141.3%,宫北(GB)雾滴密度增加45.5% ~ 92.9%,麦丝(MS)雾滴密度增加0 ~ 93.5%,满牛(MN)雾滴密度增加0 ~ 95.2%。JXF、MN、BDT、GB、MS分别增加了888.1 ~ 154.2%、0 ~ 1 298.3%、0 ~ 343.9%、0 ~ 422.5%、0 ~ 580.3%;JXF、BDT、435.8% ~ 644.0%、MS、249.3% ~ 360.0%,分别增加了746.4% ~ 426.0%。添加JXF时,液滴均匀性、滴入性和沉积性均优于其他佐剂。JXF、BDT和GB对蚜虫的防治效果显著优于其他佐剂(p <0.05)。观察到以下控制效果:施用3 d后,JXF为94.1%,BDT为93.1%,GB为93.3%;施用7 d后,JXF为97.9%,BDT为95.6%,GB为97.1%。同时,全自主果树操作模式和JXF的应用,可以有效地提高密度和沉淀,将产生叠加优化效果。本研究基于无人机操作模式和航空喷雾佐剂对榆树蚜虫的防治进行了研究,可为无人机在农林病虫害防治中的应用提供基准。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
CiteScore
4.30
自引率
12.50%
发文量
88
审稿时长
24 weeks
期刊介绍: International Journal of Agricultural and Biological Engineering (IJABE, https://www.ijabe.org) is a peer reviewed open access international journal. IJABE, started in 2008, is a joint publication co-sponsored by US-based Association of Agricultural, Biological and Food Engineers (AOCABFE) and China-based Chinese Society of Agricultural Engineering (CSAE). The ISSN 1934-6344 and eISSN 1934-6352 numbers for both print and online IJABE have been registered in US. Now, Int. J. Agric. & Biol. Eng (IJABE) is published in both online and print version by Chinese Academy of Agricultural Engineering.
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